b00ga

All UPC barcodes include a Global Trade Item Number (GTIN) (the numbers printed below the barcode). Part of the GTIN is a GS1 number assigned to the company making the product. The last digit is a check digit.

GS1 let's you search for a GTIN and they will give you the company info. If you search for the coupon GTIN, the GS1 site tells you the check digit is wrong. If you correct it, you get no results (meaning there is no company associated with the GS1 id number).

Go here to search for yourself: http://directory.gs1.org/gtin